KR102183339B1 - Switching apparatus for protecting amp and speaker through fault diagnosis and method thereof - Google Patents

Abstract

The present invention relates to a switching device for protecting an amplifier and a speaker through a fault diagnosis and method thereof, and more specifically, to a device and method, in which when transmitting general broadcasting, emergency broadcasting, disaster broadcasting, etc. through a broadcasting transmission system, the switching device diagnoses whether a fault occurs in a broadcasting line, the speaker, or an audio amplifier by measuring the impedance of an output line and the power of an input terminal and an output terminal of the audio amplifier in real time, blocks broadcast transmission through the broadcast line or speaker in which the fault occurs based on a diagnosis result, or performs switching control for sound source transmission through another broadcast line or speaker, or performs control for switching to the audio amplifier which does not have the fault, thereby avoiding overloading the audio amplifier and speaker, preventing fault or shortening of the lifespan of the audio amplifier and speaker, and preventing entire broadcast from being interrupted due to the sudden fault of the audio amplifier or speaker.

Description

Switching device for protection of amplifier and speaker through fault diagnosis and its method {SWITCHING APPARATUS FOR PROTECTING AMP AND SPEAKER THROUGH FAULT DIAGNOSIS AND METHOD THEREOF}

The present invention relates to a switching device and a method for protecting an amplifier and a speaker through fault diagnosis, and more particularly, when transmitting general broadcast, emergency broadcast, disaster broadcast, etc. through a broadcast transmission system, impedance and audio of the output line side The power of the input terminal and output terminal of the amplifier is measured in real time to diagnose whether there is a problem in the broadcasting line, speaker, or audio amplifier. By performing switching control for sound source transmission through or switching to an audio amplifier that does not have a failure, the audio amplifier and speaker are not overloaded, and failure or lifespan of the audio amplifier and speaker is shortened. The present invention relates to an apparatus and method for preventing the entire broadcast from being interrupted due to sudden failure of an audio amplifier or speaker.

Due to the broadband network and the development of broadcasting technology, various fields such as disaster broadcasting, general broadcasting, personal Internet broadcasting, education in schools, buildings, apartments, or small towns, public address for announcements, emergency situations or information, etc. Broadcasting equipment is designed and used in various ways.

In addition, as interest in people's safety is concentrated due to the increase in various disaster accidents such as fire accidents and earthquakes, which are frequently occurring in recent years, the current broadcasting equipment technology is increasingly required to provide disaster information efficiently. In particular, in areas where frequent occurrences of disasters are expected, interest and demand for broadcast transmission systems are gradually increasing to the extent that related laws and ordinances are enacted in order to minimize damage through prevention of safety accidents and quick response.

In this way, when broadcasting is performed according to the broadcasting purpose or the size of the service target, various audio processing devices and image processing devices are used. For example, the existing broadcasting transmission system is a structure that provides audio signals for each speaker. Therefore, a plurality of audio amplifiers are used, and a large system construction cost is incurred.

In addition, once the broadcast transmission system is installed, users can use the installation structure as it is because it is difficult for users to change the system structure. In this case, if the audio amplifier fails, conventionally, the failed audio amplifier is replaced or the line structure is manually modified. Since the change method was used, it was very inconvenient to perform maintenance of the audio amplifier unless it was an experienced technician, and if a quick replacement or structural change was not made, it would lead to a broadcast accident.

Accordingly, in recent years, a technology that uses an audio amplifier that performs an auxiliary function when an abnormality occurs in the audio amplifier that performs the main function by dualizing the audio amplifier used for broadcasting equipment has been introduced. However, even if it is redundant, if the audio amplifier suffers damage due to defects or breakdowns in the line and speaker, proper measures cannot be taken.

In other words, audio amplifiers with output limitations are closely related to speakers due to their characteristics, and defective speakers and lines make the output impedance of the audio amplifier close to a short circuit, and accordingly, a huge load is placed on the internal coils of the audio amplifier, resulting in failure. Raises.

In addition, since the existing broadcasting equipment with distribution function cannot diagnose faults by itself, connection with a bad speaker leads to an overload of the audio amplifier, and if an abnormality occurs in the audio amplifier, broadcasting becomes impossible.

In addition, the defect of the audio amplifier can be exposed not only to the defect of the speaker, but also to the aging of the building, the cable breakage by rodents, and the wiring of the building in case of fire or earthquake.

In addition, if a failure or failure occurs in the audio amplifier itself or is predicted, if the output of the audio amplifier cannot be switched to another audio amplifier or a spare audio amplifier, the speaker connected to the corresponding audio amplifier may be overloaded, resulting in a failure.

Therefore, in the present invention, when performing broadcasting transmission for various sound sources such as general broadcasting, emergency broadcasting, and disaster broadcasting, the impedance of the output line side and the power of the input terminal and output terminal of the audio amplifier are measured in real time, and the broadcasting line or speaker, or Audio amplifier that checks whether there is a failure of the audio amplifier, and if a failure occurs as a result of the check, blocks the broadcast transmission through the corresponding broadcast line or speaker, performs switching control for sound source transmission through another broadcast line or speaker, or does not have a failure. By performing control for switching to, the audio amplifier and speaker are not overloaded, the failure or lifespan of the audio amplifier and speaker is prevented, and broadcast that may occur due to sudden failure of the audio amplifier or speaker. I would like to suggest a way to prevent accidents.

In addition, in the present invention, the broadcast transmission through a faulty broadcast line or speaker is blocked, switching control for sound source transmission through another broadcast line or speaker is performed, or a faulty or predicted audio amplifier is replaced with another audio amplifier or spare audio. The switching device that performs switching control to the amplifier provides information on occurrence and handling of failures to the manager terminal, so that maintenance can be performed quickly and accurately, and the manager can remotely control the operation of the switching device through the manager terminal. I would like to suggest a possible solution.

Next, the prior art existing in the technical field of the present invention will be briefly described, and then the technical matters that the present invention intends to achieve differentiated from the prior art will be described.

First, Korean Patent Registration No. 1812700 (2017.12.27) relates to a multi-switching device and method for sound equipment with self-diagnostic function, and disaster broadcasting equipment, security broadcasting equipment, public address broadcasting equipment, etc. In the sound equipment of, it has a self-diagnostic function and is characterized in that it is switched to multiple control equipment when a fault is diagnosed.

That is, in the prior art, in a normal state, the main control device receives an audio signal corresponding to a sound source from an audio sound source device and control data corresponding to a broadcast control signal from a broadcast device through a switch, and transmits them through a network. Broadcasting is output-controlled to a terminal such as an amplifier, but if the main control equipment cannot perform such control, the auxiliary control equipment of at least one auxiliary control equipment is switched to control the main control equipment instead. It describes the device and method to be used.

In addition, Korean Registered Patent No. 12475730 (2013.03.26.) relates to a broadcasting system using a plurality of amplifiers having a switching function, and a switchover is installed in the amplifier used for each purpose, and an amplifier used for other purposes or other auxiliary The technical feature is that it is possible to check the fault status of each amplifier by connecting it to the speaker through an amplifier, as well as to perform emergency broadcasting using other amplifiers.

That is, in the prior art, it is possible not only to check the fault status of each amplifier, but also to perform emergency broadcasting using other amplifiers, efficiently utilize a plurality of amplifiers, and smoothly perform broadcasting through an auxiliary amplifier. It describes a broadcasting system that simplifies the structure while reducing the installation area and can properly utilize speakers and amplifiers.

As a result of reviewing the prior art above, the prior art is a configuration in which any one of at least one auxiliary control device performs control of the main control device instead when the primary control device cannot perform control, If one amplifier fails, the other amplifier is used to provide a configuration for performing emergency broadcasting, etc., but the present invention measures the impedance of the output line side and the power of the input and output terminals of the audio amplifier in real time through a switching device. By doing so, it checks whether there is a problem with the broadcasting line, speaker, or audio amplifier, blocks the transmission of broadcast through the failed broadcasting line or speaker, performs switching control for sound source transmission through another broadcasting line or speaker, or does not cause an error. By performing switching control to an unused audio amplifier and providing information on a failed broadcast line, speaker, or audio amplifier to the manager terminal, it prevents the failure or shortening of the life of the audio amplifier and speaker. B. It is to present technical features that prevent broadcast interruption due to speaker failure and enable quick and accurate maintenance. For the related configuration, there is no description or any suggestion in the prior art. The technical difference between the and the present invention is obvious.

The present invention was created to solve the above problems, and when transmitting general broadcasting, emergency broadcasting, disaster broadcasting, etc., by measuring the impedance of the output line side through a switching device in real time, failure of a broadcasting line or a speaker occurs. It is an object of the present invention to provide an apparatus and a method for diagnosing and preventing broadcast transmission through a faulty broadcast line or speaker based on the diagnosis result, or performing switching control for sound source transmission through another broadcast line or speaker. do.

In addition, the present invention measures the power of the input terminal and the output terminal of the audio amplifier in real time in the switching device, and compares the power measured at the input terminal of the audio amplifier and the power measured at the output terminal (that is, the power supplied to the line), the output terminal If the power of the input terminal of the audio amplifier increases above the threshold power in the state that there is no change in power of the audio amplifier, it is diagnosed that a failure occurs or is predicted as a problem of the audio amplifier itself, and a failure occurs in any one audio amplifier based on the diagnosis result. Another object is to provide an apparatus and method for performing control for switching to another audio amplifier or a spare audio amplifier if predicted.

In addition, the present invention provides a switching control for blocking broadcast transmission of a failed broadcast line or speaker in the switching device or for transmitting sound source through another broadcast line or speaker, and switching control to an audio amplifier that does not have a failure. Another object of the present invention is to provide an apparatus and a method for preventing a malfunction or shortening of life due to an overload of a speaker, and a broadcast interruption due to a malfunction of an audio amplifier or speaker.

In addition, another object of the present invention is to provide an apparatus and a method for quickly and accurately performing maintenance by providing information on occurrence and processing of failures from the switching device to a manager terminal.

In addition, the present invention provides a speaker for outputting general broadcasting and a speaker for outputting emergency and disaster broadcasting separately in a predetermined area, and when a failure occurs in any one of the speakers, the sound source transmitted from the switching device to the failed speaker is a speaker that does not have a failure. Another object of the present invention is to provide an apparatus and a method for preventing a broadcast from being interrupted by switching so that it can be transmitted to.

In addition, the present invention is a device that does not interfere with broadcasting in a corresponding region by increasing the transmission power and outputting when switching to transmit the broadcast transmitted through a speaker with a failure in the switching device through a speaker without a failure. Another purpose is to provide a method.

Another object of the present invention is to provide an apparatus and a method for preventing a broadcast from being interrupted by configuring a speaker by duplexing and by switching the switching device to transmit broadcast through a spare speaker when a speaker failure occurs. do.

Another object of the present invention is to provide an apparatus and a method for allowing an administrator to remotely control the operation of the switching device through an administrator terminal.

The switching device for protecting an amplifier and a speaker through fault diagnosis according to an embodiment of the present invention includes at least one audio amplifier; A switching unit for connecting or blocking a broadcast line between the at least one audio amplifier and at least one speaker; An impedance measuring unit for measuring an impedance of an output line connected to the broadcasting line from the switching unit in real time when the audio amplifier transmits a broadcast for a specific sound source to the speaker through the broadcasting line through the switching unit; And a fault diagnosis unit for diagnosing the occurrence of a failure including a broadcast line, a speaker, or a combination thereof according to the measured impedance of the output line side, and when it is detected that a failure has occurred in a specific broadcast line or speaker as a result of the diagnosis, , Overloading the audio amplifier and speaker by switching the connection between the audio amplifier and the broadcasting line to block transmission of the broadcast through the specific broadcasting line or speaker in which the failure occurs, or to perform the broadcasting transmission through another broadcasting line or speaker. It is characterized in that it prevents failure or shortening of the lifespan of the audio amplifier and the speaker by preventing it from being applied.

In addition, the switching device further includes a power measuring unit for measuring power of the input terminal and the output terminal of the audio amplifier, wherein the fault diagnosis unit is based on the measured power comparison of the input terminal and the output terminal of the audio amplifier. It further comprises diagnosing the presence or absence of a failure or prediction of failure, wherein the switching unit, when a failure occurs or a failure is predicted in a specific audio amplifier as a result of the diagnosis, the specific audio amplifier on which the failure or failure is predicted It characterized in that it further comprises performing control for switching to the audio amplifier or the spare audio amplifier.

In addition, the fault diagnosis unit diagnoses that a fault has occurred in a specific broadcasting line or speaker when the measured impedance of the output line is out of a preset threshold impedance value, and there is no change in power of the measured output terminal of the audio amplifier. If the measured power of the input terminal of the audio amplifier is greater than or equal to a preset threshold power, it is diagnosed that a failure occurs due to a self-problem of the audio amplifier or a failure is predicted.

In addition, when the switching unit is provided with at least one speaker for outputting general broadcasting and a speaker for outputting emergency and disaster broadcasting, respectively, in a predetermined broadcasting area, the diagnosis result of the fault diagnosis unit may include any of the speaker for outputting general broadcasting and a speaker for outputting emergency and disaster broadcasting. When a failure occurs in one speaker, it is characterized in that it further comprises performing switching control so that the sound source transmitted to the speaker with the failure can be transmitted to the speaker without the failure.

In addition, when the speaker is dualized including a spare speaker, if a failure occurs in a speaker currently running as a result of the diagnosis of the failure diagnosis unit, the switching unit blocks broadcast transmission through the speaker in which the failure occurs, and broadcasts transmission through the spare speaker. It characterized in that it further comprises performing the switching control to achieve this.

In addition, the method of protecting an amplifier and a speaker through fault diagnosis according to an embodiment of the present invention, in a switching device of a broadcast transmission system, is provided to a specific sound source through a switching unit from at least one audio amplifier to at least one speaker through a broadcast line. An impedance measurement step of measuring an impedance of an output line connected to the broadcast line by the switching unit in real time when transmitting a broadcast for the broadcast; A failure diagnosis step of diagnosing the occurrence of a failure including a broadcast line, a speaker, or a combination thereof according to the measured impedance of the output line, in the switching device of the broadcast transmission system; And a switching step of connecting or blocking a broadcast line between the at least one audio amplifier and at least one speaker when a failure occurs in a specific broadcast line or speaker as a result of the diagnosis, in the switching device of the broadcast transmission system, and When it is detected that an error has occurred in a specific broadcasting line or speaker as a result of the diagnosis, the audio amplifier and the audio amplifier and the audio amplifier to perform the broadcasting transmission through another broadcasting line or speaker are blocked, or By switching the connection between the broadcasting lines to prevent overloading the audio amplifier and the speaker, it is characterized in that the failure or shortening of the life of the audio amplifier and the speaker is prevented.

In addition, the amplifier and speaker protection method further includes a power measurement step of measuring power of the input terminal and the output terminal of the audio amplifier, wherein the failure diagnosis step is based on the measured power comparison between the input terminal and the output terminal of the audio amplifier. Further comprising diagnosing whether or not a failure of the audio amplifier occurs or predicting a failure occurrence, the switching step, if a failure occurs or failure is predicted in a specific audio amplifier as a result of the diagnosis, the failure or failure is predicted It characterized in that it further comprises performing control for switching the specific audio amplifier to another audio amplifier or a spare audio amplifier.

In addition, in the failure diagnosis step, if the measured impedance of the output line is out of the range of a preset threshold impedance value, it is diagnosed that a failure has occurred in a specific broadcasting line or speaker, and there is no change in power of the output terminal of the measured audio amplifier. In the state, if the measured power of the input terminal of the audio amplifier is greater than or equal to a preset threshold power, it is diagnosed that a failure has occurred due to a problem of the audio amplifier or that a failure has been predicted.

In addition, in the switching step, when at least one speaker for outputting general broadcasting and a speaker for outputting emergency and disaster broadcasting are each provided in a predetermined broadcasting area, any one of the speaker for outputting general broadcasting and the speaker for outputting emergency and disaster broadcasting has a failure. When generated, it characterized in that it further comprises performing switching control so that the sound source transmitted to the speaker in which the failure has occurred is transmitted to the speaker in which the failure has not occurred.

In addition, in the switching step, when the speaker is dualized including a spare speaker, if a failure occurs in a speaker that is currently running, the switching control is performed so that broadcast transmission through the failed speaker is blocked, and broadcast transmission is performed through the spare speaker. It characterized in that it further comprises performing a.

As described above, according to the switching device and method for protecting amplifier and speaker through fault diagnosis of the present invention, when transmitting general broadcasting, emergency broadcasting, disaster broadcasting, etc., impedance and audio amplifier of the output line side through the switching device and The power applied to the speaker is measured in real time to check whether there is an error in the broadcasting line, speaker, or audio amplifier, and block transmission of the broadcasting through the broadcasting line or speaker in which the error occurs, or perform broadcasting transmission through another broadcasting line or speaker. By performing switching control for switching or switching to an audio amplifier that does not have a failure, the audio amplifier and speaker are not overloaded, and failure or lifespan of the audio amplifier and speaker is prevented from shortening. , It has the effect of preventing broadcast interruption due to failure of an audio amplifier or speaker.

In addition, the present invention provides information on a broadcast line, a speaker, or an audio amplifier in which a failure has occurred from the switching device to the manager terminal, thereby enabling rapid and accurate maintenance.

In addition, in the present invention, when a speaker for outputting general broadcasts and a speaker for outputting emergency and disaster broadcasts are provided in a predetermined area, when a failure occurs in any one of the speakers, the switching device transmits the broadcast to a speaker that does not have a failure. When a speaker is configured by duplexing, when a failure occurs in a speaker, the switching device transmits a broadcast through a spare speaker, thereby preventing the interruption of broadcast transmission.

1 is a diagram showing the configuration of a broadcast transmission system to which an amplifier and a switching device for speaker protection are applied through fault diagnosis according to an embodiment of the present invention.
2 is a diagram illustrating a switching process in a switching device for protecting an amplifier and a speaker through fault diagnosis according to an embodiment of the present invention.
3 is a diagram showing in detail the configuration of a switching device according to an embodiment of the present invention.
4 is a diagram showing in detail the configuration of an audio input device according to an embodiment of the present invention.
5 is a diagram for explaining switching control for blocking broadcast transmission through a broadcast line or speaker in which a failure occurs according to an embodiment of the present invention.
FIG. 6 is a diagram for explaining switching control from an audio amplifier with a failure to an audio amplifier without a failure according to an embodiment of the present invention.
7 is a flowchart illustrating in detail an operation process of a method for protecting an amplifier and a speaker through fault diagnosis according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of a switching device for protecting an amplifier and a speaker through fault diagnosis and a method thereof will be described in detail with reference to the accompanying drawings. The same reference numerals in each drawing indicate the same member. In addition, specific structural or functional descriptions of the embodiments of the present invention are exemplified only for the purpose of describing the embodiments according to the present invention, and unless otherwise defined, all terms used herein including technical or scientific terms They have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this specification. It is desirable not to.

First, the'line' used in the present invention means a line between an output port of a switching device and an input port of a speaker, a broadcast line, an output-side broadcast line, an output line, a speaker input line, and an output line of a switching device.

1 is a diagram showing the configuration of a broadcast transmission system to which an amplifier and a switching device for speaker protection are applied through fault diagnosis according to an embodiment of the present invention.

As shown in Figure 1, the broadcast transmission system to which the present invention is applied includes a switching device 100, an audio input device 200, an audio amplifier 300, a speaker 400, a manager terminal 500, etc. Is composed.

The switching device 100 includes general broadcasting input through an IP network, cable, USB memory, microphone, etc. (for example, music broadcasting), disaster broadcasting (for example, fire, earthquake, flood, etc.), emergency broadcasting ( When broadcasting for various sound sources such as breaking news) is transmitted to a plurality of speakers 400 through a broadcasting line, the impedance of the output line connected to the broadcasting line is measured in real time, and the broadcasting line, the speaker 400, or The presence or absence of a failure including a combination of these is checked, and switching control is performed to block broadcast transmission through a broadcast line or speaker 400 in which a failure has occurred based on the check result. In this case, impedance is a ratio of voltage and current in an AC circuit, and is a value representing the degree of resistance against current flow when voltage is applied.

For example, in the process of transmitting broadcasts for various sound sources to a plurality of speakers 400 through the switching device 100, as a result of measuring the impedance of the output line connected to a specific broadcast line, the measured output When it is determined that the impedance of the line side is out of the range of the preset threshold impedance value, the switching device 100 automatically changes the internal connection so that the broadcast is not transmitted to the broadcasting line or speaker 400 determined to have a failure. .

Through this, the switching device 100 prevents the audio amplifier 300 from being affected by the failure or failure of the broadcasting line and the speaker 400, thereby preventing the failure or shortening of life, and a situation in which broadcasting is stopped based on this. Don't do it. That is, the risk of a broadcast accident that may occur due to a sudden failure of the audio amplifier 300 can be prevented, and reliability of various broadcast equipment used in the broadcast transmission system of users can be improved.

In addition, when the switching device 100 wants to perform switching control to block broadcast transmission through a faulty broadcast line or speaker, in addition to the most basic function of switching off a faulty speaker, broadcast transmission through a faulty speaker is Blocking and switching the broadcast to be output through another speaker that does not have a failure (refer to Fig. 5(a)), if the speakers are duplicated, broadcast to a spare speaker with no failure instead of the one with failure among the two speakers Various methods, such as a method of switching transmission (refer to (b) of FIG. 5), can be applied.

In addition, the switching device 100 provides the power of the input terminal of the audio amplifier 300 and the power of the output terminal of the audio amplifier 300 (that is, power supplied to the line connected to the input port of the speaker 400) in real time. The audio amplifier is measured and compared with the measured power of the input terminal and the output terminal of the audio amplifier 300, and the power of the input terminal of the audio amplifier 300 is equal to or greater than a preset threshold power (that is, in a state where there is no change in the output power). When the power consumption of 300 increases rapidly), it is diagnosed that a failure occurs due to a problem of the audio amplifier 300 itself or that occurrence of a failure is predicted. In addition, when a failure occurs or is predicted in a specific audio amplifier 300 based on the diagnosis result, control for switching to another audio amplifier or a spare audio amplifier is performed. In this case, the threshold power is the same as the rated power for the audio amplifier 300 or is a value set within a predetermined range (eg, 100% to 120%) of the rated power (see FIG. 6).

On the other hand, the switching device 100 is the power consumption of the audio amplifier 300 and the power of the output terminal of the audio amplifier 300 (that is, power supplied to the line connected to the input port of the speaker 400) in real time. The measured power consumption of the audio amplifier 300 is greater than or equal to a preset threshold power, and the measured power of the output terminal of the audio amplifier 300 is less than or equal to the threshold power (that is, the audio If the power consumption of the amplifier 300 rapidly increases), it may be diagnosed that a failure occurs due to a problem of the audio amplifier 300 itself or that occurrence of a failure is predicted. In this case, the power consumption of the audio amplifier 300 is power measured in a no-load state, and means power consumption of only the audio amplifier measured when the output terminal of the audio amplifier 300 is in an off state.

In addition, as described above, the switching device 100 uses temperature information in addition to a method of confirming or predicting the occurrence of a failure of the audio amplifier 300 through power comparison between the input terminal and the output terminal of the audio amplifier 300. The occurrence of a failure of the audio amplifier 300 can be confirmed or predicted.

That is, the temperature of the audio amplifier 300 and the temperature of the output side (that is, the line temperature) of the audio amplifier 300 are measured in real time, the measured temperature of the audio amplifier 300 is compared with the temperature of the output side, and the measured temperature of the audio amplifier 300 Is above a preset threshold temperature and the measured output temperature is below the threshold temperature (that is, when the temperature of the audio amplifier 300 rapidly increases without a change in the output temperature), the audio amplifier 300 ) Is to diagnose that a failure occurs due to its own problem or that the occurrence of a failure is predicted. In this case, the switching device 100 performs control for switching to another audio amplifier or a spare audio amplifier when a failure occurs or a failure is predicted in the specific audio amplifier 300 based on the diagnosis result.

In this way, when the switching device 100 measures the temperature of the audio amplifier 300 and the temperature of the output side (that is, the line temperature), in the present invention, a method of measuring by installing a thermometer on the corresponding line may be used.

In addition, the switching device 100 checks the occurrence of a failure of a specific broadcast line or speaker based on the measurement result of the impedance of the output line side, blocks the transmission of sound sources from the broadcast line or speaker 400 in which the failure occurs, or blocks other broadcast lines or speakers 400. ), or a measurement result of the power of the input terminal and the power of the output terminal of the audio amplifier 300 (that is, the power supplied to the line connected to the input port of the speaker 400). Generates failure occurrence and processing information for the occurrence or prediction of failure of a specific audio amplifier, and control results for switching the failure or predicted audio amplifier to another audio amplifier or spare audio amplifier, and the generated failure occurrence and processing By transmitting information to the manager terminal 500, the manager can perform quick and accurate maintenance based on the error occurrence and processing information.

In addition, the switching device 100 may display the error occurrence and processing information through a display unit provided outside the device, so that the administrator can check it.

At this time, the information displayed through the display unit is displayed in different colors, such as blue indicating normal operation, yellow or red indicating a failure of a broadcasting line or speaker, or a failure of an audio amplifier. You can intuitively check the status of your speaker or audio amplifier, as well as take immediate action. In addition, it goes without saying that in addition to the above colors, numbers, symbols, and letters can be used.

On the other hand, when the switching device 100 measures the impedance of the output line side in real time and checks whether a failure occurs in each broadcasting line, speaker 400, or audio amplifier 300, the above-described failure occurrence is checked. In addition to the method, the occurrence of a failure can be predicted according to the impedance value measured in real time.

For example, when the impedance of the output line is measured in real time to predict the occurrence of a failure of the broadcasting line or the speaker 400, the switching device 100 calculates a reduction speed for the impedance value for each speaker line, and the The occurrence of failure can be predicted based on the calculated rate of decline. That is, by using the derivative, the change of the impedance value measured at the previous unit time and the impedance value measured at the current unit time can be checked, and the time point of occurrence of a failure can be predicted according to the change of the checked impedance value.

In addition, the switching device 100 may be configured such that, in addition to a method in which the manager directly touches the device, the manager can control the driving of the device from a remote location through the manager terminal 500. For example, the administrator can control various operations through short-range communication such as Bluetooth, Zigbee, and beacon as well as wired and wireless Internet using the manager terminal 500 such as a smartphone equipped with an application program.

The audio input device 200 receives various sound sources such as general broadcasting, disaster broadcasting, emergency broadcasting, etc. through an IP network, cable, USB memory, microphone, etc. from the outside, and signal processing and mixing the received various sound sources to the switching Output to a plurality of audio amplifiers 200 through the device 100.

In addition, when the input sound source is analog, the audio input device 200 may additionally perform a function of converting the analog sound source into a digital sound source, and a function of converting various input sound sources into a playable file format.

The audio amplifier 300 amplifies the sound source input from the audio input device 200 and outputs the amplified sound source to the speaker 400 through the switching device 100.

At this time, at least one audio amplifier 300 may be provided according to a use environment of the broadcast transmission system, and may perform duplication and multiplexing processing to stabilize broadcast transmission. That is, by implementing a plurality of audio amplifiers in a matrix structure, if one audio amplifier fails, the other audio amplifier is configured to perform a normal function.

In addition, when a plurality of the audio amplifiers 300 are used, one audio amplifier is set as a spare, so that when the performance of any one of the audio amplifiers in use is degraded or an abnormality occurs, the corresponding audio amplifier Can be configured to be used in place of the function of.

That is, the audio amplifier 300 stops the use of a failed audio amplifier based on the switching control of the switching device 100 and switches to another audio amplifier or a spare audio amplifier that does not have a failure, so that the audio input device 200 This is to ensure that the amplification of the sound source input from) can be performed normally.

The speaker 400 is configured independently or included in an electronic device, at least one or more is electrically connected to the switching device 100, and reproduces various sound sources amplified through the audio amplifier 300 And print it out.

At this time, the speaker 400 may be installed by dividing the sound source output into a speaker for outputting general broadcasting and a speaker for outputting emergency and disaster broadcasting in a predetermined broadcasting area, and may be configured by dualizing. (See FIG. 5)

The manager terminal 500 is a smartphone, tablet, notebook, desktop PC, etc. owned by the manager, and a predetermined application program capable of remotely checking or controlling the driving state of each broadcasting equipment constituting the broadcast transmission system is installed. have.

In addition, the manager terminal 500 displays the failure occurrence and processing information transmitted from the switching device 100 through the application program, so that the manager immediately checks the broadcast line or speaker 400 in which the failure occurs, Allow maintenance to take place.

2 is a diagram illustrating a switching process in a switching device for protecting an amplifier and a speaker through fault diagnosis according to an embodiment of the present invention.

As shown in Fig. 2, various sound sources such as emergency broadcasting to inform general broadcasting such as music, disaster broadcasting related to fire or disaster, or to deliver breaking news are IP network, cable, USB memory, etc. It is input to the audio input device 200 through a microphone or the like.

Then, the audio input device 200 performs signal processing and mixing of various sound sources input from the outside, and outputs the corresponding sound source to the audio amplifier 300 through the switching device 100.

The audio amplifier 300 amplifies the sound source input from the audio input device 200 and outputs the amplified sound source to the switching device 100, and the switching device 100 is the audio amplifier 300 The various sound sources amplified in are distributed for each channel, and the sound sources distributed for each channel are output to the speaker 400 through respective lines to be reproduced.

In the process of distributing the various sound sources amplified by the audio amplifier 300 for each channel and outputting the various sound sources to the speaker 400, the switching device 100 is used as the impedance of the output line or the audio amplifier. The power of the input terminal of 300 and the power of the output terminal (that is, the power supplied to the line connected to the speaker 400) are measured in real time (①).

In addition, the switching device 100 is based on the measured impedance of the output line side, or the power of the input terminal and the output terminal of the audio amplifier 300, whether each broadcasting line and the speaker 400 is in a short-circuit state, causing a failure, Alternatively, it is diagnosed whether a failure occurs or a failure is predicted in the audio amplifier 300 (②), and if a failure occurs in a specific broadcasting line and speaker 400 as a result of the diagnosis, broadcasting through the corresponding broadcasting line and speaker 400 It performs switching control to block transmission, or performs control to switch an audio amplifier predicted or failing to another audio amplifier (③). That is, the switching device 100 performs switching control to block internal wiring so that broadcasts for various sound sources are not transmitted through a specific broadcast line or speaker 400 identified as having a failure, or a failure occurs or is predicted. To prevent sound source amplification through the identified specific audio amplifier 300, the wiring is cut off and switching control is performed so that the amplification of the corresponding sound source can be performed by another audio amplifier.

Accordingly, it is possible to prevent an overload of the audio amplifier 300 due to a bad broadcast line or the speaker 400 and an overload of the speaker 400 due to a failure of the audio amplifier 300, and the The audio amplifier 300 and the speaker 400 are operated without difficulty, so that normal broadcasting can be performed without interruption of broadcasting.

Meanwhile, the switching device 100 checks the occurrence of a failure of a specific broadcast line or speaker 400, blocks the transmission of sound sources from the broadcast line or speaker 400 in which the failure occurs, or switches the transmission of sound sources through another broadcast line or speaker 400. After generating the error occurrence and processing information related to the result or confirmation of the occurrence of a failure of the specific audio amplifier 300 and switching the failed audio amplifier to another audio amplifier or spare audio amplifier without a failure, the failure occurrence and Processing information is transmitted to the manager terminal 500 through the network, so that the manager can perform quick and accurate maintenance (④).

3 is a diagram showing in detail the configuration of a switching device according to an embodiment of the present invention.

As shown in FIG. 3, the switching device 100 includes an input/output interface unit 110, an impedance measurement unit 120, a power measurement unit 130, a failure diagnosis unit 140, a switching unit 150, and a failure. It includes an information processing unit 160, a network communication unit 170, a display unit 180, a memory 190, and the like.

In addition, although not shown in the drawing, the switching device 100 is a power supply unit for supplying operating power to each component, a setting unit for inputting commands for setting or changing various operations, and an update for managing updates of various operation programs. It may further include a management unit, an operation control unit for directly controlling the operation remotely, a temperature measurement unit for measuring the temperature of the audio amplifier for diagnosing a failure of the audio amplifier, and a temperature of an output-side broadcasting line through which broadcasts are transmitted.

The input/output interface unit 110 is composed of an input unit 111, a distribution unit 112, and an output unit 113 to receive a signal processed and mixed sound source from the audio input device 200, and the audio amplifier ( 300) and inputs and outputs for amplification processing of various sound sources input from the audio input device 200 are performed, and the sound source amplified through the audio amplifier 300 is output to the speaker 400.

The input unit 111 includes at least one input port, receives various sound sources processed and mixed by the audio input device 200, and receives a sound source amplified by the audio amplifier 300.

The distribution unit 112 performs a function of distributing various sound sources output to the speaker 400 for each channel.

The output unit 113 includes at least one output port, and outputs a sound source received from the audio input device 200 through the input unit 111 to the audio amplifier 300 or the distribution unit 112 The sound source distributed for each channel through) is output to the speaker 400.

The impedance measurement unit 120 transmits broadcasts for various sound sources such as general broadcasting, emergency broadcasting, and disaster broadcasting from the audio amplifier 300 to the speaker 400 through a broadcasting line through the switching unit 150 In this case, the switching unit 150 measures the impedance of the output line connected to the broadcasting line in real time, and provides the measured impedance value of the output line side to the fault diagnosis unit 140. In this case, it is preferable to measure the impedance of the output line side in real time, and may intermittently measure the impedance at predetermined time intervals.

The power measuring unit 130 measures the power of the input terminal and the power of the output terminal of the audio amplifier 300 (power supplied to the line connected to the speaker 400) in real time, and the measured information is measured in the fault diagnosis unit. Provided as 140.

The failure diagnosis unit 140 generates a failure including each broadcast line through which broadcasts for various sound sources are transmitted, a speaker 400 or a combination thereof based on the impedance of the output line measured by the impedance measurement unit 120 The presence or absence is diagnosed, and the diagnosis result is provided to the speaker transmission switching unit 151 of the switching unit 150.

That is, the fault diagnosis unit 140 determines whether the impedance value of the output line side measured by the impedance measurement unit 120 is out of a preset threshold impedance value range, and as a result of the determination, the measured impedance value of the output line side If it is out of the range of the preset threshold impedance value, it is diagnosed that a failure has occurred in a specific broadcast line or speaker 400, and as a result of the diagnosis, the switching unit 150 indicates that a failure has occurred in a specific broadcast line or speaker 400. By notifying, to block the broadcast transmission through the corresponding broadcast line and speaker 400, or to switch the connection between the audio amplifier 300 and the broadcast line to perform the broadcast transmission through another broadcast line or speaker 400 The control is to prevent overloading of the audio amplifier 300 and the speaker 400. In this case, the range of the threshold impedance value is a value determined with a predetermined margin from an impedance value measured in an environment in which a specific broadcasting line or speaker normally operates.

In addition, in addition to a method of diagnosing the presence or absence of a failure of the line and speaker 400 based on the impedance value of the output line measured by the impedance measurement unit 120, the failure diagnosis unit 140 ), the power of the input terminal and the output terminal of the audio amplifier 300 is compared, and based on the comparison result, the presence or absence of a failure of the audio amplifier 300 or prediction of the occurrence of a failure is diagnosed, and the diagnosis result is converted into the switching unit. It is provided to the audio amplifier output switching unit 152 of (150).

That is, in the fault diagnosis unit 140, the power of the input terminal of the audio amplifier 300 measured by the power measurement unit 130 is equal to or greater than a preset threshold power, and the measured power of the output terminal of the audio amplifier 300 is If it is less than the threshold power (that is, when the power consumption of the audio amplifier 300 increases rapidly in a state where there is no change in the power of the output side), it is assumed that a failure occurs or a failure is predicted due to a problem of the audio amplifier 300 itself. The diagnosis is made and the result of the diagnosis is notified to the switching unit 150 to perform control for switching a specific audio amplifier in which a failure occurs or is predicted to another audio amplifier or a spare audio amplifier. In this case, the threshold power is the same as the rated power provided by the manufacturer for the audio amplifier 300 or a value that can be set within a predetermined range (eg, 100% to 120%) of the rated power.

Meanwhile, the failure diagnosis unit 140 calculates a reduction rate for the impedance value of each speaker line measured by the impedance measurement unit 120 when predicting the occurrence of a failure of the broadcasting line or the speaker 400, and the calculated reduction Based on the speed, the occurrence of failure can be predicted. For example, by applying a differential method, the change of the impedance value of the previous unit time and the current unit time of the impedance value is checked, and the time point of occurrence of a failure is predicted according to the change of the checked impedance value.

The switching unit 150 includes a speaker transmission switching unit 151 and an audio amplifier output switching unit 152.

When the speaker transmission switching unit 151 determines that a specific broadcast line or speaker 400 has a failure based on the diagnosis result provided from the failure diagnosis unit 140, the specific broadcast line or speaker ( Internal wiring is blocked so that broadcasts for various sound sources are not transmitted through 400), or switching control is performed so that broadcasts are transmitted through another broadcasting line or speaker 400. In other words, by performing switching control for changing the internal wiring of the input/output interface unit 110, the broadcast is not transmitted to the broadcast line or speaker 400 determined to have a failure, or through another broadcast line or speaker 400. It is to let the broadcast go out.

The audio amplifier output switching unit 152, when it is confirmed that a failure has occurred in the specific audio amplifier 300 based on the diagnosis result provided from the failure diagnosis unit 140, the specific audio amplifier 300 confirmed that the failure has occurred. Control to switch to a spare audio amplifier or another audio amplifier that has not failed.

The failure information processing unit 160 confirms that a failure has occurred in a specific broadcast line or speaker 400 as a result of the diagnosis by the failure diagnosis unit 140, and the failure information processing unit 160 determines that a failure has occurred through the speaker transmission switching unit 151. A specific audio amplifier as a result of blocking transmission of various sound sources through the speaker 400, switching control for transmitting the sound source through another broadcasting line or speaker 400, or as a result of diagnosis by the fault diagnosis unit 140 When it is confirmed that a failure has occurred in 300 and the switching control to another audio amplifier or a spare audio amplifier that does not have a failure through the audio amplifier output switching unit 152 is performed, failure occurrence and processing information is generated. And, the generated error occurrence and processing information is transmitted to the manager terminal 500 through the network communication unit 170 so that maintenance can be performed.

The network communication unit 170 transmits the error occurrence and processing information generated by the error information processing unit 160 to the manager terminal 500 through a network.

In addition, the network communication unit 170 receives the remote control signal for driving the switching device 100, the audio input device 200, the audio amplifier 300, etc. from the manager terminal 500, the received remote The control signal is transmitted to the processor (not shown) of each device so that remote driving can be processed.

The display unit 180 is composed of an LED, etc., and is provided on the front of the switching device 100, and displays the driving status of each equipment, the broadcast transmission status, the failure occurrence and processing information related to the broadcast line or speaker in which a failure has occurred. do.

In this case, when the information displayed on the display unit 180 is displayed in a different color, the administrator can intuitively check the state of the switching device 100 only with the color displayed on the display unit 180. For example, when a normal operation is performed, it is displayed in blue, and when an error occurs in a broadcasting line or speaker, it is displayed in yellow or red, so that an administrator can take immediate action when an abnormality occurs. In addition, the display unit 180 may use numbers, symbols, characters, etc. in addition to a method of displaying different colors.

The memory 190 stores various operation programs used by the switching device 100, and stores a range of a threshold impedance value determined to have a failure, a threshold power value, and the like.

In addition, the memory 190 includes the impedance value of the output line measured in real time by the impedance measuring unit 120, the power value of the input terminal and the output terminal of the audio amplifier 300, generated by the fault diagnosis unit 140 A function of temporarily storing the error occurrence and processing information generated by the error information processing unit 160 as a result of diagnosis of a failure.

4 is a diagram showing in detail the configuration of an audio input device according to an embodiment of the present invention.

As shown in FIG. 4, the audio input device 200 includes an audio input unit 210, a signal processing unit 220, an input/output interface unit 230, a memory 240, and the like.

In addition, although not shown in the drawing, the audio input device 200 is a power supply unit for supplying operation power to each component, a setting unit for inputting commands for setting or changing various operations, and managing updates of various operation programs. It can be configured by additionally including an update management unit.

The audio input unit 210 converts various sound source files, such as WAV, MP3, OGG files, etc., input to the audio input device 200 through an IP network, cable, USB memory, microphone, etc. into a playable format and a signal processing unit ( 220).

At this time, if the input sound source is an analog sound source, it is converted to digital and output, and if the sound source file is in a format that is not reproducible, it is converted into a file in a playable format and output.

The signal processing unit 220 performs signal processing and mixing of various sound sources input from the audio input unit 210 based on setting operation information such as volume and channel set by the administrator, and processes the signal and the mixed sound source. It outputs to the audio amplifier 300 through the switching device 100.

The input/output interface unit 230 includes at least one input port and an output port, and performs input/output of the switching device 100 and various sound sources.

The memory 240 stores various operation programs used by the audio input device 200, and various sound sources such as general broadcasting, disaster broadcasting, emergency broadcasting, etc. input to the audio input unit 210, and the signal processing unit ( 220), the sound source processed and mixed is temporarily stored.

5 is a diagram for explaining switching control for blocking broadcast transmission through a broadcast line or speaker in which a failure occurs according to an embodiment of the present invention.

First, FIG. 5(a) shows that when the speaker 400 is divided into a general broadcast output and an emergency and disaster broadcast output in a predetermined area (ie, broadcast area #1), the output line side from the switching device 100 A diagram for explaining a method of performing switching control for blocking transmission of a speaker with a failure based on the impedance of.

As shown in (a) of FIG. 5, as a result of diagnosing failure based on the measurement result of the impedance of the output line side, if it is confirmed that a failure has occurred in the speaker for outputting emergency and disaster broadcasting, the switching device 100 Switching control is performed so that the generated sound source transmitted to the emergency and disaster broadcast output speaker is transmitted to the general broadcast output speaker without a failure.

Accordingly, sound sources for emergency and disaster broadcasts as well as general broadcasts are output through the general broadcast output speaker. At this time, the switching device 100 may increase the power of the sound source transmitted to the speaker in which the failure has not occurred, and in this case, even if some speakers provided in the corresponding broadcasting area do not operate, users located in the corresponding broadcasting area can perform general broadcasting. In addition, you can easily listen to emergency and disaster broadcasts.

In addition, Figure 5 (b) is a case in which the speaker 400 is duplexed, and when a failure occurs in the speaker currently driven in the switching device 100, broadcast transmission through the failed speaker is blocked, and the spare speaker It is a diagram for explaining a method of performing low switching control.

As shown in (b) of FIG. 5, as a result of diagnosing failure based on the measurement result of the impedance of the output line, if it is confirmed that a failure has occurred in the speaker that is currently transmitting the sound source, the switching device 100 is Switching control is performed so that the sound source transmitted to the speaker in operation can be transmitted to the spare speaker.

FIG. 6 is a diagram for explaining switching control from an audio amplifier with a failure to an audio amplifier without a failure according to an embodiment of the present invention.

As shown in FIG. 6, as a result of comparing the power of the input terminal and the output terminal of the audio amplifier 300 measured in real time, the switching device 100 indicates that a failure or failure is predicted in the audio amplifier #1. If confirmed, control is performed to switch the audio amplifier #1 to another audio amplifier #2 to audio amplifier #n or a spare audio amplifier.

Accordingly, the switching device 100 can prevent overloading of the speaker 400 due to the occurrence of a failure of the audio amplifier 300, as well as prevent a broadcast accident due to a sudden failure of the audio amplifier 300. Can be prevented.

Next, an embodiment of a method for protecting an amplifier and a speaker through fault diagnosis according to the present invention configured as described above will be described in detail with reference to FIG. 7. At this time, the order of each step according to the method of the present invention may be changed by a use environment or a person skilled in the art.

7 is a flow chart showing in detail the operation of an amplifier and speaker protection method through fault diagnosis according to an embodiment of the present invention.

First, when various sound sources such as general broadcasting, disaster broadcasting, emergency broadcasting, etc. are input to the audio input device 200 from the outside through an IP network, cable, USB memory, microphone, etc., the audio input device 200 The signal processing and mixing are performed, and the signal processed and mixed sound source is output to the switching device 100.

The switching device 100 outputs a signal processed and mixed sound source input from the audio input device 200 to the audio amplifier 300, and the audio amplifier 300 is provided from the switching device 100. The sound source is amplified, and the amplified sound source is output to the switching device 100.

In addition, the switching device 100 distributes various sound sources amplified by the audio amplifier 300 for each channel, and then outputs the sound sources distributed for each channel to the speaker 400 through respective lines.

In this way, when at least one audio amplifier 300 transmits a broadcast for various sound sources such as general broadcast, emergency broadcast, disaster broadcast, etc. through a broadcast line through a broadcast line, The switching device 100 performs an impedance measurement step of measuring an impedance of an output line connected to a broadcast line from the switching unit 150 (S100).

After measuring the impedance of the output line side through the step S100, the switching device 100 generates a failure including the broadcast line, the speaker 400, or a combination thereof according to the impedance of the output line side measured in the step S100. Perform the step of diagnosing a failure to diagnose the presence or absence.

That is, the switching device 100 determines whether the measured impedance value of the output line side is out of a preset threshold impedance value range (S200), and as a result of the determination, the measured impedance value of the output line side is a preset threshold impedance. If it is out of the range of the value, it is diagnosed that a failure has occurred in a specific broadcasting line or speaker 400 (S300). In this case, the range of the threshold impedance value is a value determined with a predetermined margin from an impedance value measured in an environment in which a specific broadcasting line or speaker normally operates.

In addition, the switching device 100 performs a power measurement step of measuring the power of the input terminal and the output terminal of the audio amplifier 300 in real time (S400).

After measuring the power of the input terminal and the output terminal of the audio amplifier 300 through the step S400, the switching device 100 based on the comparison of the input terminal and the output terminal of the audio amplifier 300 measured in the step S400 Diagnosing whether or not the amplifier 300 has a failure or predicting a failure. That is, the switching device 100 determines whether the measured power of the input terminal of the audio amplifier 300 is equal to or greater than a preset threshold power in a state in which there is no change in power of the output terminal (S500).

As a result of the determination, if the measured input power of the audio amplifier 300 is greater than or equal to a preset threshold power in a state where there is no change in power of the output terminal, the switching device 100 may cause a failure due to a problem of the audio amplifier 300 itself. It is diagnosed that the occurrence of the failure is predicted (S600).

On the other hand, it is diagnosed that a failure occurs or a failure is predicted in a specific broadcasting line or speaker 400 through the step S300, or a failure occurs or a failure is predicted in the specific audio amplifier 300 through the step S600. Upon diagnosis, the switching device 100 blocks the broadcast transmission through the specific broadcast line or speaker 400 in which the failure has occurred or is predicted, or the audio amplifier to perform broadcast transmission through another broadcast line or speaker 400. Control for switching the connection between 300 and the broadcast line, or control for switching the specific audio amplifier 300 in which the failure has occurred or is predicted, to another audio amplifier or a spare audio amplifier (S700) ).

Blocking broadcast transmission through a specific broadcast line or speaker 400 diagnosed as a failure through the step S700, switching control for performing broadcast transmission through another broadcast line or speaker 400, or a specific diagnosis diagnosed as a failure After performing control for switching the audio amplifier 300 to another audio amplifier, the switching device 100 generates failure occurrence and processing information, and the generated failure occurrence and processing information to the manager terminal 500 The error information processing step is carried out to perform maintenance by sending it to.

That is, the switching device 100 checks the occurrence of a failure of a specific broadcast line or speaker 400, blocks transmission of a broadcast line or speaker 400 diagnosed as a failure, or transmits a broadcast through another broadcast line or speaker 400. After confirming the occurrence of a failure of the switching control result or a specific audio amplifier 300 and switching the audio amplifier diagnosed as a failure to another audio amplifier or a spare audio amplifier, generating failure occurrence and processing information (S800) , Transmitting the generated error occurrence and processing information to the manager terminal 500 (S900), and displaying the error occurrence and processing information through the manager terminal 500 (S1000), the error occurrence and processing information The administrator who has confirmed the error is to perform maintenance of a specific broadcast line or speaker 400 or audio amplifier 300 in which a failure occurs.

As described above, the present invention measures the impedance of the output line side and the power of the input terminal and output terminal of the audio amplifier through a switching device in real time to check the presence or absence of a failure of a broadcast line, speaker, or audio amplifier, and the occurrence of a failure or a predicted broadcast line B. Because it blocks broadcast transmission through speakers, performs switching control to perform broadcast transmission through other broadcasting lines or speakers, or performs control to switch to another audio amplifier that does not have an error, the audio amplifier and speaker It is possible to prevent overloading of the system, prevent malfunction or shortening of the lifespan of audio amplifiers and speakers, and prevent broadcast interruption due to failure of audio amplifiers or speakers.

In addition, since the present invention provides information on a broadcast line, a speaker, or an audio amplifier in which a failure has occurred from the switching device to the manager terminal, quick and accurate maintenance can be performed.

In addition, in the present invention, when a speaker for outputting a general broadcast and a speaker for outputting emergency and disaster broadcasts are provided in a predetermined area, when a failure occurs in any one of the speakers, the switching device switches so that broadcast transmission is made to the speaker without the failure, In addition, when the speaker is configured by duplexing, since the switching device switches so that broadcast transmission is performed through the spare speaker when a failure occurs in the speaker, the interruption of broadcast transmission can be prevented.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and various modifications and equivalent other embodiments are available from those of ordinary skill in the field to which the technology belongs. You will understand that it is possible. Therefore, the technical protection scope of the present invention should be determined by the following claims.

100: switching device 110: input/output interface unit
111: input unit 112: distribution unit
113: output unit 120: impedance measurement unit
130: power measuring unit 140: fault diagnosis unit
150: switching unit 151: speaker transmission switching unit
152: audio amplifier output switching unit 160: error information processing unit
170: network communication unit 180: display unit
190: memory 200: audio input device
210: audio input unit 220: signal processing unit
230: input/output interface unit 240: memory
300: audio amplifier 400: speaker
500: administrator terminal

Claims (10)

At least one audio amplifier;
A switching unit for connecting or blocking a broadcast line between the at least one audio amplifier and at least one speaker;
An impedance measuring unit for measuring an impedance of an output line connected to the broadcasting line from the switching unit in real time when the audio amplifier transmits a broadcast for a specific sound source to the speaker through the broadcasting line through the switching unit; And
Includes; a fault diagnosis unit for diagnosing that a fault has occurred in a specific broadcasting line or speaker when the measured impedance of the output line is out of the range of a preset threshold impedance value,
The failure diagnosis unit further includes predicting a time point at which a failure of a broadcasting line or a speaker occurs based on a change trend of the impedance value measured in the previous unit time and the impedance value measured in the current unit time,
When the diagnosis result of the diagnosis that a specific broadcast line or speaker has a failure or a failure is predicted, the switching unit blocks broadcast transmission through a specific broadcast line or speaker where the failure or failure is predicted, or By switching the connection between the audio amplifier and the broadcast line to perform the broadcast transmission through a line or speaker, overloading the audio amplifier and the speaker prevents failure or shortening of life,
The switching unit, when switching to perform the broadcast transmission through the other broadcast line or speaker, increases the transmission power and outputs, so that there is no disruption in broadcasting in a corresponding region. Protective switching device. The method according to claim 1,
The switching device,
Further comprising; a power measuring unit for measuring the power of the input terminal and the output terminal of the audio amplifier,
The disorder diagnosis unit,
If the measured power of the input end of the audio amplifier is equal to or greater than a preset threshold power while there is no change in the power of the output end of the measured audio amplifier, it is diagnosed that a failure occurs due to a self-problem of the audio amplifier or a failure is predicted. It further includes,
The switching unit,
When a failure occurs or a failure is predicted to occur in a specific audio amplifier as a result of the diagnosis, further comprising performing control for switching the specific audio amplifier for which the failure or failure is predicted to another audio amplifier or a spare audio amplifier. A switching device for protection of amplifiers and speakers through fault diagnosis. delete The method according to claim 1,
The switching unit,
When at least one speaker for outputting general broadcasting and a speaker for outputting emergency and disaster broadcasting are respectively provided in a predetermined broadcasting area,
As a result of the diagnosis by the failure diagnosis unit, when a failure occurs or failure is predicted in any one of the speaker for outputting general broadcasting and the speaker for outputting emergency and disaster broadcasting, the sound source transmitted to the speaker for which the failure or failure is predicted is A switching device for protecting an amplifier and a speaker through fault diagnosis, further comprising performing switching control so that it can be transmitted to another speaker. The method according to claim 1,
The switching unit,
When the speaker is duplicated including a spare speaker,
As a result of the diagnosis by the failure diagnosis unit, if a failure occurs or failure is predicted in the currently running speaker, the broadcast transmission through the speaker for which the failure or failure is predicted is blocked, and broadcast transmission is made through the spare speaker. A switching device for protecting an amplifier and a speaker through fault diagnosis, further comprising performing switching control. In the switching device of the broadcast transmission system, when transmitting a broadcast for a specific sound source from at least one audio amplifier to at least one speaker through a broadcast line through a switching unit, the output line side connected to the broadcast line from the switching unit Impedance measurement step of measuring the impedance in real time;
A failure diagnosis step of diagnosing that a failure has occurred in a specific broadcast line or speaker when the measured impedance of the output line side exceeds a preset threshold impedance value, in the switching device of the broadcast transmission system; And
In the switching device of the broadcast transmission system, when a failure occurs in a specific broadcast line or speaker as a result of the diagnosis, a switching step of connecting or blocking a broadcast line between the at least one audio amplifier and at least one speaker; and
The failure diagnosis step further includes predicting a time point of occurrence of a failure of a broadcasting line or a speaker based on a change trend of the impedance value measured in the previous unit time and the impedance value measured in the current unit time,
In the switching step, if a failure occurs in a specific broadcast line or speaker or failure is predicted as a result of the diagnosis, the broadcast transmission through the specific broadcast line or speaker for which the failure or failure is predicted is blocked, or other By switching the connection between the audio amplifier and the broadcast line to perform the broadcast transmission through a broadcast line or speaker, overloading the audio amplifier and the speaker prevents failure or shortening of life,
In the switching step, when switching to perform the broadcasting transmission through the other broadcasting line or speaker, by increasing the transmission power and outputting, the amplifier through failure diagnosis, characterized in that there is no disruption in broadcasting in a corresponding region, and How to protect the speaker. The method of claim 6,
The amplifier and speaker protection method,
A power measurement step of measuring power of the input terminal and the output terminal of the audio amplifier; further comprising,
The step of diagnosing the disorder,
If the measured power of the input end of the audio amplifier is equal to or greater than a preset threshold power while there is no change in the power of the output end of the measured audio amplifier, it is diagnosed that a failure occurs due to a self-problem of the audio amplifier or a failure is predicted It further includes,
The switching step,
When a failure occurs or a failure is predicted to occur in a specific audio amplifier as a result of the diagnosis, further comprising performing control for switching the specific audio amplifier for which the failure or failure is predicted to another audio amplifier or a spare audio amplifier. A method of protecting amplifiers and speakers through fault diagnosis. delete The method of claim 6,
The switching step,
When at least one speaker for outputting general broadcasting and a speaker for outputting emergency and disaster broadcasting are respectively provided in a predetermined broadcasting area,
As a result of the diagnosis in the failure diagnosis step, if a failure occurs or failure is predicted in any one of the speaker for outputting general broadcasting and the speaker for outputting emergency and disaster broadcasting, the sound source transmitted to the speaker for which the failure or failure is predicted Amplifier and speaker protection method through failure diagnosis, further comprising performing switching control so that it can be transmitted to another speaker. The method of claim 6,
The switching step,
When the speaker is duplicated including a spare speaker,
As a result of the diagnosis in the failure diagnosis step, if a failure occurs or a failure is predicted in the currently running speaker, the broadcast transmission through the speaker for which the failure or failure is predicted is blocked, and broadcast transmission is made through the spare speaker. Amplifier and speaker protection method through fault diagnosis, further comprising performing switching control.

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